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 Documentation / Mathematica / Built-in Functions / Numerical Computation / Number Representation /
Complex
  • Complex is the head used for complex numbers.
  • You can enter a complex number in the form x + I y.
  • _Complex can be used to stand for a complex number in a pattern.
  • You have to use Re and Im to extract parts of Complex numbers.
  • See the Mathematica book: Section 3.1.1.
  • See also: Real, Re, Im.

    Further Examples

    The number x is only approximately real.

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    Chop gets rid of the small imaginary part.

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    This defines a rule to convert a complex number into a list made up of its real and imaginary parts.

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    You can apply the rule to all the elements of a list.

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